Key Takeaways on Anoa Dwarf Buffalos
- The anoa is a rare dwarf buffalo found only on two Indonesian islands: Buton and Sulawesi.
- Anoa are elusive and often live solitary lives in the dense tropical forests on these islands. They have a stocky body, averaging 2 feet and 10 inches tall.
- Due to habitat loss and hunting, the anoa is highly endangered. Roughly 2,500 remain in the wild.
On the remote Indonesian islands of Buton and Sulawesi, tropical rainforests cover most of the land. The islands' biodiversity is exceptional. On Buton, according to an Operation Wallacea Report, there are 53 mammal species, 149 bird species, and a whopping 194 butterfly species.
And hiding deep in the foliage, quiet as a mouse, doing everything it can to avoid humans, is a remarkable species: a dwarf buffalo called an anoa that stands on average only up to 2 feet 10 inches tall, per Chester Zoo.
The anoa is an endangered dwarf buffalo found only on these two tropical islands. They look like small cows, about the size of a goat that hide out in some of the densest rainforests in the world.
“It’s just very interesting that a large mammal such as the anoa is able to survive in such a limited habitat,” Sabhrina Gita Aninta, a conservation geneticist at the University of Copenhagen, said to Discover.
Meet the Anoa Dwarf Buffalo
Anoas are smaller in stature as a result of what’s called insular dwarfism, a phenomenon in which the species have evolved to be smaller on the islands due to limited resources. The opposite is also true: animals that are usually smaller on the mainland, such as rats, tend to be larger on islands. In the latter case, though, researchers aren’t entirely sure why.
Explore All OptionsThey’re stunning creatures, quiet and solitary. And at a fraction of the size, the anoa is most closely related to the water buffalo. Two very closely related species of anoa exist: the lowland and the mountain anoa, having likely diverged from one another roughly 1.4 million years ago, according to a study in Evolutionary Systematics.
While anoa are gentle and beautiful, they can also be aggressive, making them problematic for breeding programs. Captive breeding efforts have stagnated because anoa don’t always like the animals they are mated with, and in many cases, they just want to be left alone. As a result, their personalities can be persnickety. Maybe that’s what you get after being a loner for millions of years.
Read More: Rare Amur Leopard Born at Cleveland Zoo as Fewer Than 100 Remain in the Wild
The Anoa’s Particular Habitat
Still, one of the coolest things about the anoa may be where it lives.
Aninta, who studies the anoa, said that while Buton is the smaller of the two islands, the quality of the habitat is better because there aren’t as many people around to disturb their lifestyle. These animals, which live on endemic vegetation and eat fruit that falls from the trees, enjoy being elusive and react more than most species to encounters with humans, according to Point Defiance Zoo & Aquarium.
Some researchers propose that they ended up on these two particular islands because the anoa traveled there by water hundreds of thousands of years ago. Though this remains debated.
Aninta says the anoa may have been able to swim, and the rivers and canals around the islands are shallow enough that they could have ventured there all those years ago. But this is still an ongoing question.
“Ungulates like water buffaloes and anoa like to live close to water because it’s a way to survive in the extreme heat,” Aninta said to Discover.
The Anoa, an Endangered Species
Currently, fewer than 2,500 mature anoa are left in the wild, according to the IUCN Asian Wild Cattle Specialist Group. One of the main reasons the anoa is endangered is that it is one of the few large mammals available. People living on the islands hunt them because they provide high-quality food for entire villages. And as the population on these islands increases, the motivation to hunt them is also increasing.
“If you’re on the islands, they can provide a large protein source that can feed your village for days,” Aninta told Discover.
At the same time, these creatures have interesting horns, which have also become a commodity for those who hunt them. Some have started collecting their horns, which are different from other buffalo species because they are straight and point upright. Additionally, as more people move into their habitat, it becomes more fragmented, so they can’t thrive as they have for so long.
But the hope is that the more people realize the species is unique and also endangered, the more likely they will be to protect them. It’s amazing to think that you could traverse the deep forests of an Indonesian island and encounter an animal such as the anoa. The hope is that in a century you’ll still be able to witness this wonder in the wild.
Read More: 5 Endangered Species the National Park Service Helps Protect
Article Sources
Our writers at Discovermagazine.com use peer-reviewed studies and high-quality sources for our articles, and our editors review for scientific accuracy and editorial standards. Review the sources used below for this article:
- This article references information from a 2018 Operation Wallacea Report: The biodiversity value of the Buton Forests
- This article references information from the Chester Zoo: Anoa
- This article references information from a study published in Evolutionary Systematics: Biogeographic history of the endangered dwarf buffalo, subgenus Anoa (Bovidae: Bubalus quarlesi and Bubalus depressicornis): a perspective based on mitochondrial DNA phylogeny
- This article references information from the Point Defiance Zoo & Aquarium: Lowland anoa
- This article references information from the IUCN Asian Wild Cattle Specialist Group (AWCSG): Anoa
